CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2022	Sep. 30, 2022
Accounts Receivable, after Allowance for Credit Loss, Current [Abstract]
Allowance for expected credit losses	$ 6,942	$ 5,162
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	125,000,000	125,000,000
Common stock, shares issued (in shares)	82,515,917	88,482,125
Common stock, shares outstanding (in shares)	69,054,048	75,020,256
Treasury Stock, Shares [Abstract]
Treasury stock, shares (in shares)	13,461,869	13,461,869